Yongnuo yn300 iii pro led video light July 8, 2019 16 32 64 128 Yongnuo digital yn300 iii pro led video light Yongnuo yn300 pro led video light Yongnuo yn300 air pro led video light Yongnuo yn 300 ii pro led video light Yongnuo 300-iii led variable-color on-camera light